Answer:
![2(a + 8) \\ if \: a = 7 \\ 2 \times (7 + 8) \\ 2 \times 15 \\ = 30 \\](https://tex.z-dn.net/?f=2%28a%20%2B%208%29%20%5C%5C%20if%20%5C%3A%20a%20%3D%207%20%5C%5C%202%20%5Ctimes%20%287%20%2B%208%29%20%5C%5C%202%20%5Ctimes%2015%20%5C%5C%20%20%3D%2030%20%5C%5C%20)
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Answer:
2664.3
Step-by-step explanation:
The volume of a sphere is
V = 4/3 πr³
Multiply the radius (which is the diameter divided by 2), 8.6 by itself 3 times, and them multiply it by pi and 4/3 to achieve a volume of 2664.31 or aproximatley 2664.3.
Answer:
A. 5 < AC < 10
Step-by-step explanation:
If ∆ABC is a right angled triangle, we use the Pythagoras formula:
c² = a² + b²
Where c = longest side
When given sides AB, AC and BC, the formula becomes:
AB² = AC² + BC²
Where AB = Longest side
In the question,
AB = 10 and BC = 5.
10² = AC² + 5²
AC² = 10² - 5²
AC² = 100 - 25
AC² = 75
AC = √75
AC = 8.6602540378
Therefore, the expression that is always true = A. 5 < AC < 10
(-16)-10y=24
-10y=24+16
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